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Center for Adolescent Health

Our Team 

Along with members of our advisory boards, the Center for Adolescent Health is composed of a team of faculty, staff and affiliates dedicated to improving the health and well-being of young people in urban environments. Faculty are available for interviews upon request by contacting the Bloomberg School's marketing and communications team

Tamar Mendelson

Tamar Mendelson, PhD


Bloomberg Professor of American Health

Research interests: mental health, opportunity youth, urban youth, school-based prevention programs, mindfulness and yoga, mental health during pregnancy and post-partum  

Beth Marshall

Beth Marshall, DrPH

Associate Director

Assistant Scientist

Research interests: youth risk behaviors, school-based health programs, schools and health, health education, youth development, teen pregnancy prevention

Terri Powell

Terri Williams Powell, PhD


Associate Professor

Research interests: adolescent sexual health, substance use prevention, qualitative methodologies, community-engaged research (e.g., with schools, families and churches)

Kristin Mmari

Kristin Mmari, PhD


Associate Professor

Research interests: opportunity youth, early adolescents, gender norms, monitoring and evaluation 

Melissa Davey-Rothwell

Melissa Davey-Rothwell, PhD


Associate Scientist 

Research interests: HIV/AIDS, drug abuse, implementation science, dissemination, urban health

Renee Johnson

Renee Johnson, PhD


Associate Professor

Research interests: emerging adults, substance use epidemiology, vulnerable populations

Katrina L. Brooks

Katrina Brooks, MHS

Community Relations Director

Sushma Chapagain

Sushma Chapagain, BS

Research Program Coordinator

Morgan Prioleau

Morgan Prioleau, BS

Research Assistant

Ann Herbert

Ann Herbert, PhD, MPP

Postdoctoral Fellow

Phillip J. Leaf, PhD

Philip J. Leaf, PhD

Senior Advisor

Emeritus Director


Research interests: mental health, youth violence prevention, trauma-informed practices and interventions, program implementation

Freya Sonenstein

Freya Sonenstein, PhD

Emeritus Director

Cheryl Alexander

Cheryl Alexander, RN, PhD (1945-2006)

Center Founding Director